<template>
  <div class="login_container">
      <div class="login_box">
          <!-- 头像部分 -->
        <div class="avatar_box">
            <img src="../assets/logo.png" alt="">
        </div>

          <!-- from部分 -->
        <el-form label-width="0px" class="login_form" :model="loginForm" :rules="loginFormRules" ref="loginFormRef">
            <el-form-item prop="username">
                <el-input prefix-icon="el-icon-user-solid" v-model="loginForm.username"></el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input prefix-icon="iconfont icon-3702mima" v-model="loginForm.password" show-password></el-input>
            </el-form-item>
            <el-form-item class="btns" >
                <el-button type="primary" @click="login">登录</el-button>
                <el-button type="info" @click="resetLoginForm">重置</el-button>
            </el-form-item>

        
        </el-form>

      </div>
  </div>
</template>

<script>
import axios from 'axios'

    export default {
        name:'LoginVue',
        data() {
            return {
                loginForm:{
                    username:'admin',
                    password:'123456'
                },
                //建立规则
                loginFormRules:{
                    //给username定义规则
                    username: [
                        { required: true, message: '请输入活动名称', trigger: 'blur' },
                        { min: 3, max: 6, message: '长度在 3 到 6 个字符', trigger: 'blur' }
                    ],
                    //给password定义规则
                    password: [
                        { required: true, message: '请输入活动名称', trigger: 'blur' },
                        { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                    ]
                }
            }
        },
        methods:{
            //点击重置按钮
            resetLoginForm(){
                this.$refs.loginFormRef.resetFields();
            },
            login(){
                this.$refs.loginFormRef.validate( async(valid)=>{
                    if(!valid) return;
                    //之前学的方法 是可行的
                    // this.$http.post(`login?username=${this.username}&password=${this.password}`).then(
                    //     response =>{
                    //         console.log(response);
                    //     },
                    //     error=>{
                    //         console.log(error.message);
                    //     }
                    // )

                    // 解构赋值data 重命名为res   
                    const {data:res} = await this.$http.post("login",this.loginForm)
                    console.log(res);
                    if(res.meta.status !== 200) return this.$message.error('登录失败！'+res.meta.msg)
                    this.$message.success('登录成功')
                    // 1. 将登录成功之后的 token，保存到客户端的 sessionStorage 中
                    //   1.1 项目中出了登录之外的其他API接口，必须在登录之后才能访问
                    //   1.2 token 只应在当前网站打开期间生效，所以将 token 保存在 sessionStorage 中
                    window.sessionStorage.setItem('token',res.data.token)
                    // 2. 通过编程式导航跳转到后台主页，路由地址是 /home
                    this.$router.push('/home')
                })
            }
        }
    }
</script>

<style scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}
.avatar_box{
    width: 130px;
    height: 130px;
    border-radius: 50%;
    padding: 10px;
    border: 1px solid #eee;
    box-shadow: 0 0 10px #ddd;
    background-color: #fff;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);
}
.avatar_box img{
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
}
.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
.btns{
    display: flex;
    justify-content: flex-end;
}
</style>